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From William Henty   20 February 1868

Summary

Has read CD’s inquiry about proportional numbers of males and females born to domestic animals [see 5863] and outlines his theory regarding the factors determining the sex of offspring.

Author:  William Henty
Addressee:  Charles Robert Darwin
Date:  20 Feb 1868
Classmark:  DAR 166: 181, 183
Letter no:  DCP-LETT-5900

From William Henty   23 May 1868

Summary

Sex ratios in cattle and sheep.

Author:  William Henty
Addressee:  Charles Robert Darwin
Date:  23 May 1868
Classmark:  DAR 85: B24, DAR 166: 182
Letter no:  DCP-LETT-6203
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letter (2)
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